Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP5667367B2 - Air bag apparatus and gas generator used therefor - Google Patents
[go: Go Back, main page]

JP5667367B2 - Air bag apparatus and gas generator used therefor - Google Patents

Air bag apparatus and gas generator used therefor Download PDF

Info

Publication number
JP5667367B2
JP5667367B2 JP2010029630A JP2010029630A JP5667367B2 JP 5667367 B2 JP5667367 B2 JP 5667367B2 JP 2010029630 A JP2010029630 A JP 2010029630A JP 2010029630 A JP2010029630 A JP 2010029630A JP 5667367 B2 JP5667367 B2 JP 5667367B2
Authority
JP
Japan
Prior art keywords
gas
gas generator
agent
ignition agent
ignition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2010029630A
Other languages
Japanese (ja)
Other versions
JP2010228747A (en
Inventor
竜太郎 白石
竜太郎 白石
建林 陳
建林 陳
陽治 田崎
陽治 田崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autoliv ASP Inc
Original Assignee
Autoliv ASP Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autoliv ASP Inc filed Critical Autoliv ASP Inc
Priority to JP2010029630A priority Critical patent/JP5667367B2/en
Priority to CN201010117117XA priority patent/CN101823469B/en
Priority to US12/717,409 priority patent/US8096580B2/en
Priority to EP10002334.0A priority patent/EP2226222B1/en
Publication of JP2010228747A publication Critical patent/JP2010228747A/en
Application granted granted Critical
Publication of JP5667367B2 publication Critical patent/JP5667367B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/263—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output
    • B60R2021/2633—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output with a plurality of inflation levels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • B60R2021/2648—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder comprising a plurality of combustion chambers or sub-chambers

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Description

本発明は、車両に搭載されるエアバッグ装置及びガス発生器に関する。特に、その作動性能に特徴を有するエアバッグ装置用ガス発生器の改良に関する。   The present invention relates to an airbag device and a gas generator mounted on a vehicle. In particular, the present invention relates to an improvement in a gas generator for an air bag apparatus characterized by its operating performance.

自動車等の車両には、衝突事故等が発生した際に乗員がハンドルや前面ガラス等の車両内部の硬い部分に激突して負傷又は死亡することを防ぐために、ガスによりバッグを急速に膨張させ、搭乗者の危険な箇所への衝突を防ぐエアバッグシステムが搭載されている。   In vehicles such as automobiles, in order to prevent occupants from crashing into hard parts inside the vehicle such as the steering wheel and windshield and injuring or dying when a collision accident etc. occurs, the bag is rapidly inflated with gas, An airbag system is installed to prevent passengers from colliding with dangerous locations.

エアバッグシステムは、乗員の体格（例えば、座高の高さ等）や、その搭乗姿勢（例えば、ハンドルにしがみついた姿勢）等が異なる場合であっても、乗員を安全に拘束可能であることが望ましい。そこで、従来は、作動時初期の段階に於いて、乗員に対してできる限り衝撃を与えないで作動する様なエアバッグシステムの提案がなされている。   The airbag system may be able to safely restrain the occupant even when the occupant's physique (for example, the height of the sitting height) and the boarding posture (for example, the posture clinging to the handle) are different. desirable. Therefore, conventionally, there has been proposed an air bag system that operates at the initial stage of operation without applying as much impact to the occupant as possible.

特開平８−２０７６９６号公報においては、二段階でガスを発生させ、一段目で比較的ゆっくりエアバッグを膨張させる。そして、二段目で迅速なガス発生を行わせる。そこで、２種類のガス発生剤のカプセルを用いている。しかしながら、ガス発生器内の構造が複雑であり、容器の大きさが大きくなりコスト高の要因となるという欠点を有する。
特開平８−２０７６９６号公報 In JP-A-8-207696, gas is generated in two stages, and the airbag is inflated relatively slowly in the first stage. Then, rapid gas generation is performed in the second stage. Therefore, capsules of two kinds of gas generating agents are used. However, the structure in the gas generator is complicated, and the size of the container is increased, resulting in a high cost factor.
JP-A-8-207696

又、米国特許第４，９９８，７５１号や、米国特許第４，９５０，４５８号に於いても、ガス発生器の作動機能を規制するため二つの燃焼室を設けてガス発生剤を二段階に燃焼させることが提案されている。しかしながら、この場合にも構造が複雑であり、未だ充分なものとはいえない。
米国特許第４，９９８，７５１号 米国特許第４，９５０，４５８号 Also, in US Pat. No. 4,998,751 and US Pat. No. 4,950,458, two combustion chambers are provided to regulate the operation function of the gas generator, and the gas generating agent is supplied in two stages. It has been proposed to burn. However, even in this case, the structure is complicated, and it cannot be said that it is sufficient.
US Pat. No. 4,998,751 U.S. Pat. No. 4,950,458

更に、特開平１１−３３４５１７号公報には、ガス発生剤が収容される空間に隙間を設けることにより、作動初期の段階におけるエアバッグの衝撃力を低減させる構造が開示されている。しかしながら、本来必要とされるガス量を得ることが困難となり、乗員拘束性能が低下する恐れがある。
特開平１１−３３４５１７号公報 Furthermore, Japanese Patent Application Laid-Open No. 11-334517 discloses a structure that reduces the impact force of an airbag at the initial stage of operation by providing a gap in a space in which a gas generating agent is accommodated. However, it is difficult to obtain the gas amount that is originally required, and there is a possibility that the occupant restraint performance may be reduced.
JP 11-334517 A

本発明は、上記のような状況に鑑みて成されたものであり、簡易な構造でありながら、作動初期の段階において、エアバッグモジュールへのダメージ及び乗員に対する衝撃を低減し、且つ乗員を確実に拘束可能なエアバッグ装置及びこれに用いるガス発生器を提供することを目的とする。   The present invention has been made in view of the situation as described above, and has a simple structure, but at the initial stage of operation, reduces damage to the airbag module and impact on the occupant, and ensures occupant safety. It is an object of the present invention to provide an air bag device that can be restrained by a gas generator and a gas generator used therefor.

本発明の第１の態様に係るエアバッグ装置用ガス発生器は、車両の衝撃によって作動するイニシエータ（点火器）と；前記イニシエータによって点火される発火剤と；前記発火剤を収容する発火剤収容室と；前記発火剤によって着火、燃焼するガス発生剤と；前記ガス発生剤を収容する燃焼室とを備える。そして、前記ガス発生剤の燃焼によって発生するガスによってエアバッグを膨張させる構造である。更に、前記発火剤収容室内には前記発火剤が充填されない空間が形成されていることを特徴とする。   A gas generator for an air bag apparatus according to a first aspect of the present invention includes an initiator (igniter) that is activated by an impact of a vehicle; an ignition agent that is ignited by the initiator; and an ignition agent storage that stores the ignition agent A chamber; and a gas generating agent ignited and burned by the ignition agent; and a combustion chamber containing the gas generating agent. The airbag is inflated by a gas generated by the combustion of the gas generating agent. Furthermore, the space which is not filled with the said ignition agent is formed in the said ignition agent accommodation chamber, It is characterized by the above-mentioned.

本発明の第２の態様に係るエアバッグ装置は、前記ガス発生器に加えて、当該ガス発生器によって発生したガスによって膨張・展開するエアバッグとを備えたことを特徴とする。   An airbag apparatus according to a second aspect of the present invention includes an airbag that is inflated and deployed by gas generated by the gas generator in addition to the gas generator.

好ましくは、前記発火剤は前記発火剤収容室内の容積に対して３０％〜５０％であり、残りは前記空間とする。   Preferably, the igniting agent is 30% to 50% with respect to the volume in the igniting agent accommodation chamber, and the rest is the space.

以上のような構成の本発明によれば、簡易な構造でありながら、作動初期の段階において、乗員に対してできる限り衝撃を与えないように作動し、且つ乗員を確実に拘束可能となる。
According to the present invention having the above-described configuration, while having a simple structure, in the initial stage of operation, the operation is performed so as not to give an impact to the occupant as much as possible, and the occupant can be reliably restrained.

図１は、本発明の実施例に係るエアバッグ装置用ガス発生器の構造を示す概略断面図である。FIG. 1 is a schematic cross-sectional view showing the structure of a gas generator for an airbag apparatus according to an embodiment of the present invention. 図２は、本発明の実施例に係るエアバッグ装置用ガス発生器の特性を示すグラフである。FIG. 2 is a graph showing characteristics of the gas generator for an airbag apparatus according to the embodiment of the present invention. 図３は、本発明の実施例に係るエアバッグ装置用ガス発生器のガス発生剤と発火剤の相対的な装填量を示す表である。FIG. 3 is a table showing the relative loading amounts of the gas generating agent and the ignition agent of the gas generator for the airbag apparatus according to the embodiment of the present invention. 図４は、比較参考例と本発明の実施例に係るエアバッグ装置用ガス発生器の特性を示すグラフである。FIG. 4 is a graph showing characteristics of the gas generator for an airbag apparatus according to the comparative reference example and the example of the present invention. 図５は、比較参考例と本発明の実施例に係るエアバッグ装置用ガス発生器の特性を示すグラフである。FIG. 5 is a graph showing characteristics of the gas generator for an airbag apparatus according to the comparative reference example and the example of the present invention. 図６は、本発明の実施例に係るエアバッグ装置用ガス発生器の構造を示す概略断面図である。FIG. 6 is a schematic cross-sectional view showing the structure of the gas generator for an airbag apparatus according to the embodiment of the present invention.

図１は、本発明の実施例に係るエアバッグ装置用ガス発生器の構造を示す概略断面図である。本実施例に係るエアバッグ装置用ガス発生器１０は、車両の衝撃によって作動するイニシエータ（点火器）１４と；イニシエータ１４によって点火される発火剤２２と；発火剤２２を収容する発火剤収容室１６と；発火剤２２によって着火、燃焼されるガス発生剤２４と；ガス発生剤２４を収容する燃焼室１８とを備える。   FIG. 1 is a schematic cross-sectional view showing the structure of a gas generator for an airbag apparatus according to an embodiment of the present invention. The gas generator 10 for an airbag apparatus according to the present embodiment includes an initiator (igniter) 14 that is activated by an impact of a vehicle; an ignition agent 22 that is ignited by the initiator 14; and an ignition agent storage chamber that stores the ignition agent 22 16; a gas generating agent 24 ignited and combusted by the ignition agent 22; and a combustion chamber 18 containing the gas generating agent 24.

本実施例に係るガス発生器１０は、ガス発生剤２４の燃焼によって発生するガスによってエアバッグを膨張させる構造である。本実施例の特徴は、発火剤収容室１６内に発火剤２２が充填されない空間を形成することである。好ましくは、発火剤２２は発火剤収容室１６内の容積に対しておよそ３０％〜５０％充填し、残りは空間とする。   The gas generator 10 according to the present embodiment has a structure in which an airbag is inflated by a gas generated by combustion of the gas generating agent 24. The feature of this embodiment is that a space in which the ignition agent 22 is not filled is formed in the ignition agent storage chamber 16. Preferably, the igniting agent 22 is filled approximately 30% to 50% with respect to the volume in the igniting agent storage chamber 16, and the rest is a space.

なお、図１に示す状態は、例えば、自動車が走行中の様子であり、発火剤２２が沈静していない状態である。一方、例えば、自動車が停止している（非走行状態）場合には、図６に示すように、発火剤２２は下方に沈静し、発火剤収容室１６の上部に発火剤２２が充填されていない空間が拡がることになる。   The state shown in FIG. 1 is, for example, a state in which the automobile is running, and is a state where the igniting agent 22 is not calmed down. On the other hand, for example, when the automobile is stopped (non-running state), as shown in FIG. 6, the igniting agent 22 is settled downward, and the igniting agent 22 is filled in the upper part of the igniting agent storage chamber 16. There will be no space.

ガス発生器１０は、また、上下２つのシェルからなるハウジング１２を備えている。ハウジング１２は、鋳造、鍛造、プレス加工等により成形可能である。ハウジング１２の周壁部には、例えば直径３ｍｍ程度のガス排出口２８が周方向に複数配設（例えば等間隔に１８個）されており、当該排出口２８から排出されるガスによってエアバッグ（図示せず）を膨張・展開させる構造となっている。   The gas generator 10 also includes a housing 12 composed of two upper and lower shells. The housing 12 can be formed by casting, forging, pressing, or the like. A plurality of gas discharge ports 28 having a diameter of about 3 mm, for example, are provided in the circumferential direction of the housing 12 in the circumferential direction (for example, 18 at regular intervals). (Not shown).

上述した発火剤収容室１６を形成するイグナイタカップ１６ａは、鋳造、鍛造若しくはプレス加工又は切削加工等の何れか、或いはそれらの組み合わせにより形成することができる。イグナイタカップ１６ａの中には、イニシエータ１４が設けられると共に、発火剤２２が収容される。イグナイタカップ１６ａの周壁には、燃焼室１８内のガス発生剤２４を燃焼させる元となる火炎の流路として貫通孔２６が形成されている。   The igniter cup 16a forming the above-described ignition agent housing chamber 16 can be formed by any one of casting, forging, pressing, cutting, or a combination thereof. In the igniter cup 16a, an initiator 14 is provided and an ignition agent 22 is accommodated. A through hole 26 is formed in the peripheral wall of the igniter cup 16a as a flame flow path that causes the gas generating agent 24 in the combustion chamber 18 to burn.

ハウジング１２内には、ガス発生剤２４の着火・燃焼により発生するガスを浄化・冷却するクーラント・フィルタ２０が設けられている。クーラント・フィルタ２０は、ガス発生剤２４を取り囲んで配設され、イグナイタカップ１６ａの周囲に環状の室、即ちガス発生剤燃焼室１８を区画する。クーラント・フィルタ２０は、例えばステンレス鋼製の金網を半径方向に重ね、半径方向および軸方向に圧縮して成形することができる。   A coolant filter 20 for purifying and cooling the gas generated by the ignition and combustion of the gas generating agent 24 is provided in the housing 12. The coolant filter 20 is disposed so as to surround the gas generating agent 24, and defines an annular chamber, that is, a gas generating agent combustion chamber 18, around the igniter cup 16a. The coolant / filter 20 can be formed by overlapping, for example, stainless steel wire meshes in the radial direction and compressing them in the radial and axial directions.

発火剤収容室１６と同様に、燃焼室１８内にガス発生剤２４の存在しない空間を形成することも可能ではあるが、あまり大きく空間（例えば、全容積の１０％以上）を形成するとガス発生量が低下してしまうため、できるだけ空間は小さい方がよい。   Although it is possible to form a space in which the gas generating agent 24 does not exist in the combustion chamber 18 as in the case of the ignition agent storage chamber 16, if a very large space (for example, 10% or more of the total volume) is formed, gas is generated. Since the amount is reduced, the space should be as small as possible.

図２は比較参考例と本発明における実施例の実験結果を示すグラフである。図２は、発火剤収容室１６の容積に対する発火剤２２の充填率を調整したガス発生器における着火後のタンク圧力の時間変化を示す。縦軸がタンク内圧力を示し、横軸はイニシエータによって着火した瞬間からの時間経過を示す。図２中では、比較参考例１，２と実施例１、２，３を示す。   FIG. 2 is a graph showing experimental results of a comparative reference example and an example of the present invention. FIG. 2 shows the time change of the tank pressure after ignition in the gas generator in which the filling rate of the ignition agent 22 with respect to the volume of the ignition agent storage chamber 16 is adjusted. The vertical axis represents the tank internal pressure, and the horizontal axis represents the time elapsed from the moment of ignition by the initiator. In FIG. 2, Comparative Reference Examples 1 and 2 and Examples 1, 2, and 3 are shown.

図３は、比較参考例および本発明の実施例におけるそれぞれの相対的なガス発生剤２４の充填量と発火剤２２の充填率を示す表である。   FIG. 3 is a table showing the relative filling amount of the gas generating agent 24 and the filling rate of the ignition agent 22 in the comparative reference example and the example of the present invention.

図２に示すように、本実施例の構造によると、発火剤の充填率５０%以下でガス発生器（エアバッグ装置）の作動初期の段階でのタンク圧力を比較参考例よりも低く抑えることができる。発火剤の充填率を下げることにより、タンク圧力上昇開始時間が遅れエアバッグを膨張させ乗員拘束が遅れてしまうことが懸念されるが、充填率３０%以上では問題となるほどタンク圧力上昇開始の遅れは発生しない。   As shown in FIG. 2, according to the structure of the present embodiment, the tank pressure at the initial stage of operation of the gas generator (airbag device) is suppressed to be lower than that of the comparative reference example when the filling rate of the ignition agent is 50% or less. Can do. By reducing the filling rate of the ignition agent, there is a concern that the tank pressure rise start time will be delayed and the airbag will be inflated, and the passenger restraint will be delayed. However, if the filling rate is 30% or more, the start of the tank pressure rise will become a problem. Does not occur.

一方、図２に示すように、発火剤収容室１６の容積に対して発火剤２２の充填率を下げると、タンク内圧力の最大値も比較参考例１よりも低くなる。この程度でも問題となるほど低くはない。しかし、ガス発生剤２４の充填量を増やした実施例に示されるように、ガス発生剤の量を増やすことにより比較参考例１と同等の最大値を得る事ができ、且つ作動初期の段階でのタンク内圧力を低減させることが可能であることが分かる。実施例３では、作動中期から後期にかけて十分なタンク内圧力が得られている。   On the other hand, as shown in FIG. 2, when the filling rate of the ignition agent 22 is lowered with respect to the volume of the ignition agent storage chamber 16, the maximum value of the tank internal pressure is also lower than that of the comparative reference example 1. This level is not so low as to be a problem. However, as shown in the example in which the filling amount of the gas generating agent 24 is increased, by increasing the amount of the gas generating agent, a maximum value equivalent to that of Comparative Reference Example 1 can be obtained, and at the initial stage of operation. It can be seen that the tank internal pressure can be reduced. In Example 3, sufficient tank internal pressure is obtained from the middle stage of operation to the latter stage.

なお、図２に示すタンク圧力は以下の方法によるタンク燃焼試験によって測定されたものである。内容積６０リットルのタンク(ステンレス鋼製もしくはアルミ製)内に、エアバッグ用ガス発生器を固定し、室温においてタンクを密閉後、外部着火電気回路に接続する。別にタンクに設置された圧力トランスデューサーにより、着火電気回路スイッチを入れた（着火電流印加）時間を０として、タンク内の圧力上昇変化を時間０〜１００ミリ秒の間測定する。各測定データをコンピュータ処理により最終的にタンク圧力／時間曲線として、ガス発生剤成型体の性能を評価する曲線（以下「タンクカーブ」とする）を得る。   In addition, the tank pressure shown in FIG. 2 is measured by the tank combustion test by the following method. A gas generator for an air bag is fixed in a tank (made of stainless steel or aluminum) having an internal volume of 60 liters, and the tank is sealed at room temperature and then connected to an external ignition electric circuit. Separately, with a pressure transducer installed in the tank, the time when the ignition electric circuit switch is turned on (ignition current application) is set to 0, and the pressure rise change in the tank is measured for 0 to 100 milliseconds. Each measurement data is finally converted into a tank pressure / time curve by computer processing to obtain a curve (hereinafter referred to as “tank curve”) for evaluating the performance of the gas generant molded product.

図４、図５は本発明の実施例３に係るエアバッグ装置用ガス発生器の特性を示すグラフである。図４は、ガス発生器におけるガス発生量（マス・フロー）の時間的変位を示し、比較参考例１によるものを破線で示し、本実施例３によるものを実線で示す。図４に示すように、本実施例の構造によると、ガス発生器（エアバッグ装置）の作動初期の段階でのガス発生量を低く抑えることができる。その後、作動中期から後期にかけては十分なガス量が得られることが分かる。   4 and 5 are graphs showing the characteristics of the gas generator for an airbag apparatus according to Example 3 of the present invention. FIG. 4 shows the temporal displacement of the gas generation amount (mass flow) in the gas generator, the one according to Comparative Reference Example 1 is indicated by a broken line, and the one according to Example 3 is indicated by a solid line. As shown in FIG. 4, according to the structure of the present embodiment, the amount of gas generated at the initial stage of operation of the gas generator (airbag device) can be kept low. Thereafter, it is understood that a sufficient amount of gas can be obtained from the middle stage to the latter stage of operation.

図５は、ガス発生器における発生ガス温度の時間変位を示し、比較参考例１によるものを破線で示し、本実施３によるものを実線で示す。図５に示すように、本実施例の構造によると、ガス発生器（エアバッグ装置）の作動初期の段階でのガス温度を低く抑えることができる。その後、作動中期から後期にかけては概ね従来通りの挙動となることが分かる。   FIG. 5 shows the time displacement of the generated gas temperature in the gas generator, the one according to Comparative Reference Example 1 is indicated by a broken line, and the one according to the third embodiment is indicated by a solid line. As shown in FIG. 5, according to the structure of the present embodiment, the gas temperature at the initial operation stage of the gas generator (airbag device) can be kept low. Then, it turns out that it becomes a behavior as usual from the middle period of operation to the latter period.

以上説明したように、本実施例においては、エアバッグ装置の作動初期には比較的少ないガス量、ガス温度、ガス圧によってエアバッグがマイルドに膨張する。このため、エアバッグモジュールへのダメージの軽減と乗員への加害性の低減を図ることが出来る。その後は十分なガス量、ガス温度、ガス圧によってエアバッグが膨張・展開して乗員を的確に拘束する。   As described above, in this embodiment, the airbag is mildly expanded by a relatively small amount of gas, gas temperature, and gas pressure at the initial operation of the airbag apparatus. For this reason, it is possible to reduce the damage to the airbag module and reduce the damage to the occupant. After that, the airbag is inflated and deployed by a sufficient amount of gas, gas temperature, and gas pressure to accurately restrain the occupant.

以上本発明の実施例について説明したが、本発明は上記実施例に限定されるものではなく、特許請求の範囲に記載された技術的思想を逸脱しない範囲で種々の設計変更等が可能である。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the technical idea described in the claims. .

例えば、実施例３では、ガス発生剤の量を通常充填量よりも１０％程度多く充填しているが、充填密度などの条件を満たす限りそれ以外の充填率を採用しても良い。具体的には、本発明の効果を損なわない範囲、すなわち元の標準的なガス発生剤の量に対して２０％程度以下の範囲で増量することは、十分に可能である。
For example, in Example 3, the amount of the gas generating agent is filled about 10% more than the normal filling amount, but other filling rates may be adopted as long as the filling density and other conditions are satisfied. Specifically, it is sufficiently possible to increase the amount in a range that does not impair the effects of the present invention, that is, in a range of about 20% or less with respect to the amount of the original standard gas generant.

１０ エアバッグ装置用ガス発生器
１２ ハウジング
１４ 点火器（イニシエータ）
１６ 発火剤収容室
１８ ガス発生剤燃焼室
２０ クーラント・フィルタ
２２ 発火剤
２４ ガス発生剤
２６ 発火剤２２のガス流路
２８ ガス排出口 10 Gas Generator for Airbag Device 12 Housing 14 Igniter (Initiator)
Reference Signs List 16 ignition agent storage chamber 18 gas generating agent combustion chamber 20 coolant filter 22 ignition agent 24 gas generating agent 26 gas flow path of ignition agent 22 28 gas outlet

Claims (3)

車両に搭載されるエアバッグ装置用のガス発生器において、
前記車両の衝撃によって作動するイニシエータ（点火器）と；
前記イニシエータによって点火される発火剤と；
前記イニシエータを取り囲むように前記発火剤が収容される発火剤収容室と；
点火された前記発火剤の火炎によって着火され、燃焼するガス発生剤と；
前記ガス発生剤を収容する燃焼室とを備え、
前記ガス発生剤の燃焼によって発生するガスによってエアバッグを膨張させる構造であり、
前記発火剤は前記発火剤収容室内の容積に対して３０％〜５０％であり、当該発火剤収容室の残りは前記発火剤が充填されない空間であることを特徴とするガス発生器。 In a gas generator for an airbag device mounted on a vehicle,
An initiator that is activated by the impact of the vehicle;
An ignition agent ignited by the initiator;
An ignition agent storage chamber in which the ignition agent is stored so as to surround the initiator;
A gas generant that is ignited and burned by a flame of the ignited ignition agent;
A combustion chamber containing the gas generating agent,
The airbag is inflated by a gas generated by the combustion of the gas generating agent;
The gas generator is characterized in that the amount of the ignition agent is 30% to 50% with respect to the volume of the ignition agent storage chamber, and the remainder of the ignition agent storage chamber is a space not filled with the ignition agent . 前記発火剤収容室の周壁には、前記燃焼室内の前記ガス発生剤を燃焼させる元となる前記火炎の流路としての貫通孔が形成されていることを特徴とする請求項１に記載のガス発生器。   2. The gas according to claim 1, wherein a through hole is formed in a peripheral wall of the ignition agent storage chamber as a flow path of the flame that is a source for burning the gas generating agent in the combustion chamber. Generator. 請求項１又は２に記載のガス発生器と；
当該ガス発生器によって発生したガスによって膨張・展開するエアバッグとを備えたことを特徴とするエアバッグ装置。 A gas generator according to claim 1 or 2 ;
An airbag device comprising: an airbag that is inflated and deployed by gas generated by the gas generator.
JP2010029630A 2009-03-06 2010-02-15 Air bag apparatus and gas generator used therefor Expired - Fee Related JP5667367B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2010029630A JP5667367B2 (en) 2009-03-06 2010-02-15 Air bag apparatus and gas generator used therefor
CN201010117117XA CN101823469B (en) 2009-03-06 2010-03-02 Air bag apparatus and gas generator for the same
US12/717,409 US8096580B2 (en) 2009-03-06 2010-03-04 Air bag apparatus and gas generator for the same
EP10002334.0A EP2226222B1 (en) 2009-03-06 2010-03-05 Air bag device and gas generator used therein

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009053407 2009-03-06
JP2009053407 2009-03-06
JP2010029630A JP5667367B2 (en) 2009-03-06 2010-02-15 Air bag apparatus and gas generator used therefor

Publications (2)

Publication Number Publication Date
JP2010228747A JP2010228747A (en) 2010-10-14
JP5667367B2 true JP5667367B2 (en) 2015-02-12

Family

ID=42237093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010029630A Expired - Fee Related JP5667367B2 (en) 2009-03-06 2010-02-15 Air bag apparatus and gas generator used therefor

Country Status (4)

Country Link
US (1) US8096580B2 (en)
EP (1) EP2226222B1 (en)
JP (1) JP5667367B2 (en)
CN (1) CN101823469B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8997655B1 (en) * 2009-06-04 2015-04-07 Tk Holdings Inc. Gas generating system
US8882143B2 (en) * 2013-02-08 2014-11-11 Autoliv Asp, Inc. Airbag with slit vent

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950458A (en) 1989-06-22 1990-08-21 Morton International, Inc. Passenger automotive restraint generator
US4998751A (en) 1990-03-26 1991-03-12 Morton International, Inc. Two-stage automotive gas bag inflator using igniter material to delay second stage ignition
US5513879A (en) 1994-05-04 1996-05-07 Breed Automotive Technology, Inc. Two stage inflator with module venting for passenger side airbags
KR100272955B1 (en) * 1995-12-01 2000-11-15 구마모토 마사히로 Gas generating agent and transfer charge for use in airbag gas generator, and gas generator comprising said gas generating agent and transfer charge
JPH1159314A (en) * 1997-08-12 1999-03-02 Daicel Chem Ind Ltd Gas generator for air bag
JP2963086B1 (en) * 1997-12-26 1999-10-12 ダイセル化学工業株式会社 Gas generator and airbag device for airbag
JP2000016226A (en) * 1998-06-26 2000-01-18 Daicel Chem Ind Ltd Gas generator and airbag device for airbag
TW469235B (en) * 1999-10-04 2001-12-21 Daicel Chem Gas generator for air bag and air bag device
WO2001062558A1 (en) * 2000-02-22 2001-08-30 Daicel Chemical Industries, Ltd. Airbag gas generator, deflector member, coolant/filter means support member, coolant, and housing
DE60129248T2 (en) * 2000-12-27 2007-10-11 Daicel Chemical Industries, Ltd., Sakai GAS GENERATOR FOR USE IN AIRBAGS AND AIR BAGING DEVICE
WO2003066390A1 (en) * 2002-02-06 2003-08-14 Nippon Kayaku Kabushiki-Kaisha Gas generator
US7125041B2 (en) * 2003-01-15 2006-10-24 Daicel Chemical Industries, Ltd. Gas generator
JP2004230922A (en) * 2003-01-28 2004-08-19 Nippon Kayaku Co Ltd Gas generator
JP2005061663A (en) * 2003-08-08 2005-03-10 Takata Corp Initiator, initiator igniting agent, initiator starting method, and gas generator
JP3696870B1 (en) * 2004-03-30 2005-09-21 日本化薬株式会社 Gas generator
DE102004063268A1 (en) * 2004-12-24 2006-07-13 Takata-Petri (Ulm) Gmbh Occupant protection device
US7556289B2 (en) * 2005-07-29 2009-07-07 Daicel Chemical Industries, Ltd. Gas generator for air bag
US20070085314A1 (en) * 2005-10-14 2007-04-19 Daicel Chemical Industries, Ltd. Gas generator for airbag
JP4878206B2 (en) * 2006-04-28 2012-02-15 株式会社ダイセル Inflator
JP2008062685A (en) * 2006-09-05 2008-03-21 Daicel Chem Ind Ltd Apparatus with igniter assembly
US7591483B2 (en) * 2006-11-06 2009-09-22 Daicel Chemical Industries, Ltd. Gas generator for restraining device for vehicle
JP4332189B2 (en) * 2007-08-09 2009-09-16 トヨタ自動車株式会社 Inflator and vehicle airbag apparatus using the same
JP4953998B2 (en) * 2007-09-18 2012-06-13 株式会社ダイセル Gas generator for personnel restraint system

Also Published As

Publication number Publication date
US20100225099A1 (en) 2010-09-09
CN101823469B (en) 2012-11-21
JP2010228747A (en) 2010-10-14
US8096580B2 (en) 2012-01-17
EP2226222A1 (en) 2010-09-08
CN101823469A (en) 2010-09-08
EP2226222B1 (en) 2013-04-24

Similar Documents

Publication Publication Date Title
US5845933A (en) Airbag inflator with consumable igniter tube
RU2185972C2 (en) Method of and device for filling empty flexible reservoir
CN100425481C (en) pyrotechnic side impact inflator
JP5611840B2 (en) Gas generator for airbag device
US6012737A (en) Vehicle occupant protection apparatus
EP1454803A1 (en) Gas generator
JPH02169347A (en) Gas generator
JP2004042893A (en) Low strength two-stage type hybrid inflator
JP5707328B2 (en) Inflator for airbag and airbag inflation method
MX2011010804A (en) Gas generator.
JP5667367B2 (en) Air bag apparatus and gas generator used therefor
JP5793605B2 (en) Gas generator
TW512108B (en) Gas generator for air bag and air bag device
JP2007314050A (en) Device including igniter
JP2006111257A (en) Gas generator
JP5231346B2 (en) Gas generator for airbag device and method for manufacturing the same
US20120187668A1 (en) Inflators and methods of making inflators for safe transport and use with inflatable airbag cushions
JP5586853B2 (en) Gas generator for airbag device, jig for assembling gas generator, and assembling method of gas generator
JP4994787B2 (en) Gas generator
JP5466866B2 (en) Inflator for airbag
JP4542698B2 (en) Gas generator for airbag and airbag device
JP6477445B2 (en) Airbag device for vehicle
JP2010064668A (en) Inflater and airbag device
JP5174752B2 (en) Gas generator for airbag
JP2006168669A (en) Gas generator for airbag

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20101112

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20101112

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20121119

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20121122

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20131203

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131217

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140310

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140513

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140729

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20141202

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20141212

R150 Certificate of patent or registration of utility model

Ref document number: 5667367

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees